Definition of hexaploid in English:



  • 1(of a cell or nucleus) containing six homologous sets of chromosomes.

    • ‘However, even with the large size of this hexaploid genome, the genes within the three component genomes remain largely colinear.’
    • ‘The hexaploid wheat genome is composed of three related diploid genomes designated A, B, and D with seven chromosomes each.’
    • ‘In all three polyploids, the respective tetraploid and hexaploid genome sizes are slightly larger than the corresponding multiple of the diploid subsp. glaucum.’
    • ‘For example, Devos and Gale used the term ‘genome’ to refer to both the entire complement of nuclear DNA in a hexaploid wheat nucleus and to the individual A, B and D ‘genomes’.’
    • ‘There is a high degree of colinearity among hexaploid wheat chromosomes within each of the seven homoeologous groups.’
    1. 1.1(of an organism or species) composed of hexaploid cells.
      • ‘The observed segmental structure of the Brassica genome strongly suggests that the extant Brassica diploid species evolved from a hexaploid ancestor.’
      • ‘Together with other Brassica species, it likely descends from a hexaploid ancestor followed by extensive rearrangements, making its genome essentially a triplicated A. thaliana genome.’
      • ‘Because the present study analysed only one accession in each hexaploid species, it is not known whether these variations are species-specific or not.’
      • ‘Recent molecular data indicate differences in molecular chromosome organization among the genomes of diploid, tetraploid, and hexaploid wheat.’
      • ‘Our genetic analysis detected some aberrations, such as the presence of four hexaploid offspring in the progeny study.’


  • A hexaploid organism, variety, or species.

    • ‘LAGERCRANTZ 1998 suggested that the base diploid Brassica genome evolved from an ancient hexaploid with three highly rearranged A. thaliana-like genomes.’
    • ‘Cytological variation of R. japonica var. japonica in its native regions is high and includes tetraploids, hexaploids, octoploids and decaploids.’
    • ‘It is a hexaploid that is thought to be produced by two sequential hybridization events.’
    • ‘Both parents and all the progenies are hexaploids, as shown twice using flow cytometry.’
    • ‘By 1939, after seven years’ work with repeated crossing of hexaploids and octoploids, a German scientist, Müntzing, was getting promising results, and by 1950 he had produced plants with 90% of the yield of wheat.’